Circumference
The distance around ?
Circumference
Area
Diameter
Circumference
What is the area of a circle with a radius of 8cm?
r = 8
A=pi r2
Answer in terms of pi
Approximate Answer
Answer in terms of pi
pi64
Approximate Answer
200.96
The formula for the circumference of a circle
C= 2 pi r
C= (3.14) d
radius x radius
give an example:
A Ferris wheel travels in a circular motion and measures 40 meters from the top car to the bottom car
What's the radius of the Ferris Wheel?
What is the diameter of the Ferris Wheel?
radius = 20 m
diameter = 40 m
r= 14
Answer in terms of pi ?
Approximate Answer
pi196
Approximate Answer
615.44
Which formula is used to find the area of a triangle?
A= bh/2
circumference
If a hula hoop measures has a diameter of 14 inches, What is the circumference?
C = (3.14)d
C= 43.96
d=18
r= d / 2
Answer in terms of pi
Approximate answer
Answer in terms of pi
pi81
Approximate Answer
254.34
Area of a rectangle or a parallelogram?
A= bh
Which operation is used with shaded figures ?
hint " shade is negative"
Subtraction
A kickball has a radius of 6 inches. Find the circumference of the kickball
Circumference is 37.68
What is the area of a circle with a diameter of 8in ?
d=8
A=(3.14) r 2
Answer in terms of pi
Approximate answer
Answer in terms of pi
pi16
Approximate Answer
50.24
Area of a square?
A = bh
Multiplication key words
per
each
every
times
If the circle's diameter is 27, find the circumference
Answer in terms of pi
Approximate answer
Answer in terms of pi
27pi
Approximate answer
84.78
What is the area of a circle with a radius of 3 meters?
r2 = r x r
Answer in terms of pi?
Approximate Answer
Answer in terms of pi
pi 9
Approximate Answer
28.26
Area of a circle ?
A= pi r2
A= pi r2 / 4